China has unveiled a new dredging ship capable of creating islands such as those Beijing has already built in the disputed South China Sea.

It can dredge anything from sand and mud to coral. It cuts material out from the sea bed, suctions it up and conveys it to as far as 15km from the ship to pile it up and form new "reclaimed" land. Similar - though smaller - vessels were used to build islands in the South China Sea starting in late 2013.